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|
; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
declare void @ext_func(i64* %ptr)
declare void @ext_func_i32(i32* %ptr)
; CHECK-LABEL: alloca32:
; Check that there is an extra local for the stack pointer.
; CHECK: .local i32{{$}}
define void @alloca32() noredzone {
; CHECK: i32.const $push[[L4:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L1:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L2:.+]]=, __stack_pointer($pop[[L1]])
; CHECK-NEXT: i32.const $push[[L3:.+]]=, 16
; CHECK-NEXT: i32.sub $push[[L8:.+]]=, $pop[[L2]], $pop[[L3]]
; CHECK-NEXT: i32.store $push[[L10:.+]]=, __stack_pointer($pop[[L4]]), $pop[[L8]]{{$}}
; CHECK-NEXT: tee_local $push[[L9:.+]]=, $[[SP:.+]]=, $pop[[L10]]{{$}}
%retval = alloca i32
; CHECK: i32.const $push[[L0:.+]]=, 0
; CHECK: i32.store {{.*}}=, 12($pop[[L9]]), $pop[[L0]]
store i32 0, i32* %retval
; CHECK: i32.const $push[[L6:.+]]=, 0
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 16
; CHECK-NEXT: i32.add $push[[L7:.+]]=, $[[SP]], $pop[[L5]]
; CHECK-NEXT: i32.store $drop=, __stack_pointer($pop[[L6]]), $pop[[L7]]
ret void
}
; CHECK-LABEL: alloca3264:
; CHECK: .local i32{{$}}
define void @alloca3264() {
; CHECK: i32.const $push[[L2:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L3:.+]]=, __stack_pointer($pop[[L2]])
; CHECK-NEXT: i32.const $push[[L4:.+]]=, 16
; CHECK-NEXT: i32.sub $push[[L6:.+]]=, $pop[[L3]], $pop[[L4]]
; CHECK-NEXT: tee_local $push[[L5:.+]]=, $[[SP:.+]]=, $pop[[L6]]
%r1 = alloca i32
%r2 = alloca double
; CHECK-NEXT: i32.const $push[[L0:.+]]=, 0
; CHECK-NEXT: i32.store $drop=, 12($pop[[L5]]), $pop[[L0]]
store i32 0, i32* %r1
; CHECK-NEXT: i64.const $push[[L1:.+]]=, 0
; CHECK-NEXT: i64.store $drop=, 0($[[SP]]), $pop[[L1]]
store double 0.0, double* %r2
; CHECK-NEXT: return
ret void
}
; CHECK-LABEL: allocarray:
; CHECK: .local i32{{$}}
define void @allocarray() {
; CHECK: i32.const $push[[L7:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L4:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L5:.+]]=, __stack_pointer($pop[[L4]])
; CHECK-NEXT: i32.const $push[[L6:.+]]=, 144{{$}}
; CHECK-NEXT: i32.sub $push[[L11:.+]]=, $pop[[L5]], $pop[[L6]]
; CHECK-NEXT: i32.store ${{.+}}=, __stack_pointer($pop[[L7]]), $pop[[L11]]
%r = alloca [33 x i32]
; CHECK: i32.const $push{{.+}}=, 24
; CHECK-NEXT: i32.add $push[[L3:.+]]=, $[[SP]], $pop{{.+}}
; CHECK-NEXT: i32.const $push[[L1:.+]]=, 1{{$}}
; CHECK-NEXT: i32.store $push[[L0:.+]]=, 0($pop[[L3]]), $pop[[L1]]{{$}}
; CHECK-NEXT: i32.store $drop=, 12(${{.+}}), $pop[[L0]]{{$}}
%p = getelementptr [33 x i32], [33 x i32]* %r, i32 0, i32 0
store i32 1, i32* %p
%p2 = getelementptr [33 x i32], [33 x i32]* %r, i32 0, i32 3
store i32 1, i32* %p2
; CHECK: i32.const $push[[L10:.+]]=, 0{{$}}
; CHECK-NEXT: i32.const $push[[L8:.+]]=, 144
; CHECK-NEXT: i32.add $push[[L19:.+]]=, $[[SP]], $pop[[L8]]
; CHECK-NEXT: i32.store $drop=, __stack_pointer($pop[[L10]]), $pop[[L9]]
ret void
}
; CHECK-LABEL: non_mem_use
define void @non_mem_use(i8** %addr) {
; CHECK: i32.const $push[[L1:.+]]=, 48
; CHECK-NEXT: i32.sub $push[[L11:.+]]=, {{.+}}, $pop[[L1]]
; CHECK-NEXT: i32.store $[[SP:.+]]=, {{.+}}, $pop[[L11]]
%buf = alloca [27 x i8], align 16
%r = alloca i64
%r2 = alloca i64
; %r is at SP+8
; CHECK: tee_local $push[[L12:.+]]=, $[[SP:.+]]=, $pop{{.+}}
; CHECK: i32.const $push[[OFF:.+]]=, 8
; CHECK-NEXT: i32.add $push[[ARG1:.+]]=, $pop[[L12]], $pop[[OFF]]
; CHECK-NEXT: call ext_func@FUNCTION, $pop[[ARG1]]
call void @ext_func(i64* %r)
; %r2 is at SP+0, no add needed
; CHECK-NEXT: call ext_func@FUNCTION, $[[SP]]
call void @ext_func(i64* %r2)
; Use as a value, but in a store
; %buf is at SP+16
; CHECK: i32.const $push[[OFF:.+]]=, 16
; CHECK-NEXT: i32.add $push[[VAL:.+]]=, $[[SP]], $pop[[OFF]]
; CHECK-NEXT: i32.store {{.*}}=, 0($0), $pop[[VAL]]
%gep = getelementptr inbounds [27 x i8], [27 x i8]* %buf, i32 0, i32 0
store i8* %gep, i8** %addr
ret void
}
; CHECK-LABEL: allocarray_inbounds:
; CHECK: .local i32{{$}}
define void @allocarray_inbounds() {
; CHECK: i32.const $push[[L6:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L3:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L4:.+]]=, __stack_pointer($pop[[L3]])
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 32{{$}}
; CHECK-NEXT: i32.sub $push[[L10:.+]]=, $pop[[L4]], $pop[[L5]]
; CHECK-NEXT: i32.store ${{.+}}=, __stack_pointer($pop[[L6]]), $pop[[L10]]{{$}}
%r = alloca [5 x i32]
; CHECK: i32.const $push[[L3:.+]]=, 1
; CHECK-DAG: i32.store $push{{.*}}=, 24(${{.+}}), $pop[[L3]]
%p = getelementptr inbounds [5 x i32], [5 x i32]* %r, i32 0, i32 0
store i32 1, i32* %p
; This store should have both the GEP and the FI folded into it.
; CHECK-DAG: i32.store {{.*}}=, 12(${{.+}}), $pop
%p2 = getelementptr inbounds [5 x i32], [5 x i32]* %r, i32 0, i32 3
store i32 1, i32* %p2
call void @ext_func(i64* null);
; CHECK: call ext_func
; CHECK: i32.const $push[[L6:.+]]=, 0{{$}}
; CHECK-NEXT: i32.const $push[[L5:.+]]=, 32{{$}}
; CHECK-NEXT: i32.add $push[[L7:.+]]=, ${{.+}}, $pop[[L5]]
; CHECK-NEXT: i32.store $drop=, __stack_pointer($pop[[L6]]), $pop[[L7]]
ret void
}
; CHECK-LABEL: dynamic_alloca:
define void @dynamic_alloca(i32 %alloc) {
; CHECK: i32.const $push[[L7:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L1:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L13:.+]]=, __stack_pointer($pop[[L1]])
; CHECK-NEXT: tee_local $push[[L12:.+]]=, [[SP:.+]], $pop[[L13]]{{$}}
; Target independent codegen bumps the stack pointer.
; CHECK: i32.sub
; Check that SP is written back to memory after decrement
; CHECK: i32.store $drop=, __stack_pointer($pop{{.+}}),
%r = alloca i32, i32 %alloc
; Target-independent codegen also calculates the store addr
; CHECK: call ext_func_i32@FUNCTION
call void @ext_func_i32(i32* %r)
; CHECK: i32.const $push[[L3:.+]]=, 0{{$}}
; CHECK: i32.store $drop=, __stack_pointer($pop[[L3]]), $pop{{.+}}
ret void
}
; CHECK-LABEL: dynamic_alloca_redzone:
define void @dynamic_alloca_redzone(i32 %alloc) {
; CHECK: i32.const $push[[L8:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L13:.+]]=, __stack_pointer($pop[[L1]])
; CHECK-NEXT: tee_local $push[[L12:.+]]=, [[SP:.+]], $pop[[L13]]{{$}}
; CHECK-NEXT: copy_local [[FP:.+]]=, $pop[[L12]]{{$}}
; Target independent codegen bumps the stack pointer
; CHECK: i32.sub
%r = alloca i32, i32 %alloc
; CHECK-NEXT: tee_local $push[[L8:.+]]=, $0=, $pop
; CHECK-NEXT: copy_local $drop=, $pop[[L8]]{{$}}
; CHECK-NEXT: i32.const $push[[L6:.+]]=, 0{{$}}
; CHECK-NEXT: i32.store $drop=, 0($0), $pop[[L6]]{{$}}
store i32 0, i32* %r
; CHECK-NEXT: return
ret void
}
; CHECK-LABEL: dynamic_static_alloca:
define void @dynamic_static_alloca(i32 %alloc) noredzone {
; Decrement SP in the prolog by the static amount and writeback to memory.
; CHECK: i32.const $push[[L7:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L8:.+]]=, 0{{$}}
; CHECK: i32.const $push[[L9:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L10:.+]]=, __stack_pointer($pop[[L9]])
; CHECK-NEXT: i32.const $push[[L11:.+]]=, 16
; CHECK-NEXT: i32.sub $push[[L20:.+]]=, $pop[[L10]], $pop[[L11]]
; CHECK-NEXT: tee_local $push[[L19:.+]]=, $[[FP:.+]]=, $pop[[L20]]
; CHECK: i32.store $push[[L0:.+]]=, __stack_pointer($pop{{.+}}), $pop{{.+}}
; Decrement SP in the body by the dynamic amount.
; CHECK: i32.sub
; Writeback to memory.
; CHECK: i32.store $drop=, __stack_pointer($pop{{.+}}), $pop{{.+}}
%r1 = alloca i32
%r = alloca i32, i32 %alloc
store i32 0, i32* %r
; CHEC: i32.store $drop=, 0($pop{{.+}}), $pop{{.+}}
ret void
}
; The use of the alloca in a phi causes a CopyToReg DAG node to be generated,
; which has to have special handling because CopyToReg can't have a FI operand
; CHECK-LABEL: copytoreg_fi:
define void @copytoreg_fi(i1 %cond, i32* %b) {
entry:
; CHECK: i32.const $push[[L1:.+]]=, 16
; CHECK-NEXT: i32.sub $push[[L3:.+]]=, {{.+}}, $pop[[L1]]
%addr = alloca i32
; CHECK: i32.const $push[[OFF:.+]]=, 12
; CHECK-NEXT: i32.add $push[[ADDR:.+]]=, $pop[[L3]], $pop[[OFF]]
; CHECK-NEXT: copy_local [[COPY:.+]]=, $pop[[ADDR]]
br label %body
body:
%a = phi i32* [%addr, %entry], [%b, %body]
store i32 1, i32* %a
; CHECK: i32.store {{.*}}, 0([[COPY]]),
br i1 %cond, label %body, label %exit
exit:
ret void
}
declare void @use_i8_star(i8*)
declare i8* @llvm.frameaddress(i32)
; Test __builtin_frame_address(0).
; CHECK-LABEL: frameaddress_0:
; CHECK: i32.const $push[[L0:.+]]=, 0{{$}}
; CHECK-NEXT: i32.load $push[[L3:.+]]=, __stack_pointer($pop[[L0]])
; CHECK-NEXT: copy_local $push[[L4:.+]]=, $pop[[L3]]{{$}}
; CHECK-NEXT: tee_local $push[[L2:.+]]=, $[[FP:.+]]=, $pop[[L4]]{{$}}
; CHECK-NEXT: call use_i8_star@FUNCTION, $pop[[L2]]
; CHECK-NEXT: i32.const $push[[L1:.+]]=, 0{{$}}
; CHECK-NEXT: i32.store $drop=, __stack_pointer($pop[[L1]]), $[[FP]]
define void @frameaddress_0() {
%t = call i8* @llvm.frameaddress(i32 0)
call void @use_i8_star(i8* %t)
ret void
}
; Test __builtin_frame_address(1).
; CHECK-LABEL: frameaddress_1:
; CHECK-NEXT: i32.const $push0=, 0{{$}}
; CHECK-NEXT: call use_i8_star@FUNCTION, $pop0{{$}}
; CHECK-NEXT: return{{$}}
define void @frameaddress_1() {
%t = call i8* @llvm.frameaddress(i32 1)
call void @use_i8_star(i8* %t)
ret void
}
; Test a stack address passed to an inline asm.
; CHECK-LABEL: inline_asm:
; CHECK: __stack_pointer
; CHECK: #APP
; CHECK-NEXT: # %{{[0-9]+}}{{$}}
; CHECK-NEXT: #NO_APP
define void @inline_asm() {
%tmp = alloca i8
call void asm sideeffect "# %0", "r"(i8* %tmp)
ret void
}
; TODO: test over-aligned alloca
|
